Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"bai thi loan snippets" » "bai thi lan snippets", "bai thi hoan snippets", "bai thi lien snippets", "bui thi loan snippets", "ban thi loan snippets", "tai thi loan snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("bai thi loan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("bai thi loan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( bai thi loan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("bai thi loan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.